Mark@Abbey m/s

4 wheel alignment is £100-00 + vat (£117.50 inc vat)

Mark

I think my berks set of the CEL light in very cold weather - reset in warm weather and all is fine, then when it drops under 2-3 degrees, it comes back. My logic was that cold dense air allows more fuel to the mix, therfore runs rich...so emissions go up, tripping the CEL. Is this similar to what others have found?

 

Called Nissan to ask them to read the fault code for me, to be on the safe side, but they want to charge me £50 for the privilege. Is this standard Nissan practice?

come and see us we will do it FOC. and your get a coffee while waiting.

Now had an answer on another thread from Abby, and it seems that the Uprev basically deletes the ECUs ability to switch to the default maps (IE safe maps should heavy knock be encountered) which kind of worries me, it basically sticks to the more aggressive fuelling and timing maps to achieve the boost in performance,

I would very much like to get hold of the software and see for myself just what parameters are actually available to modify/edit in the ECU.

No it doesn't , where did you read that , the car after deleting the self learn will run on the HIGH Det map i.e lower ignition numbers (SAFE) it will THEN add timing listening to the knock sensor suntil it is back to the LOW det figures (more agressive)

We do not switch anything off in the ECU , just tune the learn figures to enable a SAFE map.

I think we just refine the stock map.

Tricky, not being funny but modern ECU,s have moved on so much from say 8/10 years ago , look at our TV,s 10 years ago the TV,s was massive boxes , nowdays so much more compact better pictures, we could discuss merits off ECU,s for ever.

I feel the latest spec ECU fitted to the Z are pretty awesome , we can tune ever ECU fitted to a VQ engine and even the new GTR can now be tuned. We can even add a boost control map to the 350Z ecu,s if we need to.

The early narrow band ecu,s still closed loop very well as they are tuning around the lambda 1 settings which is okay, the later cars you can tune from 10.0 to 17.0 afr due to the wide band lambda which are fitted.

Mark

far more superior than an old Supra ECU I feel.

From 06/2006 all 350 z have wide band ecu,s , but all 350z has the ability to tune the ignition timing live.

Mark

just a quick reply to a few questions;

We call the 350z a self learn ecu ; it works it 2 ways

1 IGNITION; the car runs 2 maps , low det and high det maps , the high dett map uses a less advanced (agressive) map. When you delete the self learn ,the car reverts to the high det map then starts feeding timing in ,listening to the det sensors to listen for the dreaded tingle. after a short time the car will be running full timing , they can even add a degree or two here and there we have found most on part throttle.

2 FUEL again the car runs 2 maps 1, closed loop this is called the trim map , the car uses the lambda reading to run the car at the correct fuelling 2,open loop i.e full throttle and there about , the numbers in the map will add the correct amount fuel you want i.e no closed loop. You can if needed delete the closed loop , only normalyed used on race cars but we find using this map and a tuned figure helps part throttle driving especially with turbo powered car.

when we say self learn we mean the car can play with the fuelling and ignition maps itself to obtain the best/safest performance. Very smart ecu just like 350 owners

Mark

not the dyno causing problems it understanding how the car works , these car self learn, any difference in driving issues they start to self learnagain , delete the self learn while on the dyno it will take 5/6 runs for the car to get back the where it was..

I dig a dyno sheet out showing this sometime.

Mark

UK cars dont ever seem to run the quoted BHPNissan say we find but these cars need to run a certain way on the dyno to give a good reliable figure.

You need to run in 4th gear , do 4 or 5 full throttle runs you notice the bhp will increase a sthe runs count up , then let the car cool off for 2/3 mintues then carry out a full throttle run , this will give the most reliable figure we find.

We normally see around 230/235 bhp at the hubs for a stock DE UK car this equates to around 265/270 bhp at the flywheel , I have run a few so happy to quote hub bhp , but you can't compare figured between dyno,s thou.

any more questions ask away.

Mark

how much to deliver it

Mark

Cant wait to get a Zed that responds to mods

They do if you remap, all modern ECU,s self tune it the way for the ecu to tune the car for the wear and tear of mileage , different weather conditions. cars have come a long way in the last few years.

If you want to bolt stuff on your need a remap full stop. Even a totally stock car we can make it drive better and give a better spread of bhp/torque after a remap.

370's are even more intelligent but that can wait for another day

Mark

I mapped a UK car fitted with De-cats and a Nismo system , to be honest it wasn,t to loud cruising around but did give a good bark when floored or reved. BHP/Torque wasn't to bad either.

I would say the Nismo system is pretty good at giving good power and being reasonable quiet, but wont give the big figures like some of the other systems out there, but I am afraid to say to make the 300+ bhp you need a good flowing system which normally means noise.

Matt, did I quote you for a set of Berks De-cat,s and a XYz fitted with a race cat? I know it may be a little more expensive than a set of ceramic front cats to use with your Nismo system inc Y pipe but I am sure it will give more bhp than a pair of race cats fitted.

Mark

What model car you got? I can do a reflash just to remove the speed limiter and not tweak the map at all?

Just send me your ECU , I will turn it round in a day.

Mark

it isn't that far honest guvnor, I am sure Nissan will be okay , just get them to read the fault code and tell what is wrong.

Mark

Oh really , you can read what all the O2 sensors are reading with the uprev , so I thought you can work out what 1 isn't working properly.

Shame you a little far from us , we have a Nissan Consult 2 for diagnostic,s.

Fancy a road trip!!!!

RS can help you out as they have the Uprev software , you may need to have a remap thou.

Other than that I has to be a Nissan dealer, generic OBDII readers doesn't read all the Nissan CEL codes

Not got a stock car UK at the moment,we have a 350Z UK car that is being repaired as we speak that we will use as a development car , I will try out the idea you have.

My JDM car is way past a stock car and will take to long to put back to stock.

Will keep you up to speed at what is going on thou.

Mark

I think its going to be very similar to the gains had from any aftermarket y pipe but with the advantage of easy changes of cats and decat pipes.

 

Most probably. Its just as it joins before the y pipe. as usually its manifold - cats - Y pipe but with the xyz it will be manifold - xyz - cat/decat. Their marketing says the further back the Y is the better the power gains.

 

 

You mention with the XYZ it would be in the order "exhaust manifold - connected to XYZ - then cat/decat". So does the XYZ pipe replace the two stock cats?

No XYZ just fits where the stock Y pipe fits. What we do is remove the stock cats and fit de-cat pipes , then we can use the XYZ pipe and fit a de-cat pipe/silencer/race cats. Very easily to swop over as well.

very nice piece of kit.

Mark

Have you done any N/A testing with the Cosworth plenum on a non-revup car?

These are only good again F/I just like the Kinetx manifold.

I can't see how anyone can design something that works as good as the stock designed plenum that Nissan must have spent a few quid developing. The spacer/Mrev will help a little because I feel Nissan had to lose a little height from the motor to make it fit under the bonnet/

Kinetix SS plenum doesn't work full stop on a N/A car I gain over 10 lb/ft of torque when refitting a stock plenum without a spacer.

I will try the spacer below the lower collector as soon as 1 turn,s up.

I read the posts tommorrow and answer , good thread boys and girl.

Motordyne make these , we will carry stock if they work.

Mark

It seems that the ECU is a law unto itself really without a proper remap

Agree the cars defintely need a remap , a few figures nee dchanging on the feed back maps and we can tweak the ignition map as well

've pretty much assumed that any gains I've seen on the dyno are going to be slowly taken back by the girly ECU although at the moment it still feels punchier than before, especially at motorway speeds

Wouldn't call it girly , just a lot more intelligent than us lot .

Re the Mrev on a DE motor , got to be worth a try. But I have some idea,s re tuning these cars;

I feel for a Stage1 DE car I would go for the following

06 Airbox with a HKS filter

Berks De-cats

Motordyne XYZ Y pipe with either silencer or CAT fitted

Stock exhaust ( I feel this will flows enough air)

UPREV reflash.

The above set up I feel with give the most gain ( this will become a package deal from me)

Then I would fit headers and possibly a system ( weather your stock system falls aparts or you just want something a little more noisy) and a 5/16 spacer and Ignen filter kit and a map tweak , this I feel will give over 300bhp @ the flywheel with a big gain in mid-range torque.Might be worth try a Mrev on the above kit to see if it is worth trying.

Also might be worth trying a lower manifold spacer one of these;

http://www.motordyneengineering.com/ima ... cer180.jpg

We find lenghtening the intake length will increase torque.

Then I feel we really need to get into the motor to get anymore gains if we want to stay N/A or bolt a S/C kit on fit larger injectors/fuel pump and we should see 400bhp flywheel pretty easily.

Mark

Do you guys at Abbey have any 06+ airboxes lying around so you can try and replicate my results?

Yes I have a couple of 06' air boxes , once my UK car is ready to go , I will try one out.

But if you have a remap I am sure you get a few more ponies.

Reason I ask about number of runs as we find the 1/2nd runs will show a gain then the car will not allow car to run with full map figures i.e timing degree,s figures. You see dyno figures a fair bit down on the 1/2nd runs , your find your need 6/8 runs to get a proper figure on a dyno.

Mark

Prices for the Motordyne are attached to this mail;

Will keep XYZ pipe sin stock.

The expensive Shockwave Ti Dual system comes with a XYZ pipe with a resonator so for a complete system is not a bad price for a top quality system

Any questions ask away.

Mark

MattG,

what was the wheel bhp please , and how many runs did you do?

Mark

XYZ pipe looks really nice , I have one in my office , whats works real well with this items is that you can order it with a decat pipe and also have a cat for MOT purposes , far more easy to swop over than both cats like on a STD cat set up.

Also carrying BERKS De-cat pipes in stock now.

Mark